How to Change the Oil in a 2024 GAS GAS MC 65

Shop parts for a 2024 GAS GAS MC 65 Dirt Bike.

Keeping your 2024 GAS GAS MC 65 running at its best requires regular oil changes. Whether you're preparing for a race or just keeping up solid maintenance, follow this guide for a smooth, efficient oil change tailored specifically to this year, make, and model.

Tools and Supplies Needed

  • 3/8” ratchet
  • 3/8” extension
  • 13mm 3/8” socket (preferably shallow) — fits in tight space without removing the shifter
  • Oil catch pan
  • Rag or shop towel
  • Brush or compressed air for cleaning around the drain area
  • Fresh oil: The 2024 GAS GAS MC 65 requires 15W-50 gear oil, 500ml (0.53 quarts)
  • Replacement O-ring (optional) — for the drain bolt if worn (recommended)
  • Funnel or oil bottle for easy pouring
  • Gloves (optional for clean hands)

Preparations and Model-Specific Notes

  • Shifter clearance: The oil drain plug is conveniently located right behind the shifter on the left side of the bike. Use a shallow 13mm socket to reach the plug without needing to remove the shifter.
  • Oil Spec: Always use a high-quality 15W-50 gear oil to maintain performance and protect internal components. GAS GAS recommends 500ml (0.53 quart) for each change.
  • Warm up the bike: For best results, briefly run the engine (2-3 minutes). Warm oil flows better, carrying away more contaminants.

Step-by-Step Oil Change Instructions

  1. Warm Up the Engine
    • Run the bike for 2-3 minutes so the oil warms up (but is not dangerously hot).
  2. Stabilize Your Bike
    • Place the bike securely on a stand. For the MC 65, the left-side drain bolt is easiest to access; a flat stand works best since conventional bike stands may block access to the drain.
  3. Clean Around the Drain Plug
    • Remove any dirt and debris around the drain plug using a rag, brush, or compressed air. This helps prevent contaminants entering the engine when removing the plug.
  4. Remove the Drain Plug and Drain Oil
    • Carefully slide your oil catch pan beneath the left side beneath the drain plug, behind the shifter.
    • Using the 13mm shallow socket, ratchet, and extension, remove the drain plug. Oil will begin to flow out rapidly — allow it to completely drain. Be patient and tilt the bike slightly if needed to ensure thorough drainage.
  5. Inspect and Replace the O-Ring
    • Check the O-ring on the drain plug for cracks or flattening. If it's worn, replace it with a new one to ensure a tight, leak-free seal.
  6. Reinstall the Drain Plug
    • Clean the drain plug and threads. Install the drain plug by hand to avoid cross-threading, then snug up with the ratchet. Do not overtighten—usually a firm hand-tight plus a quarter turn is enough.
  7. Fill with New Oil
    • Locate the oil fill cap at the top of the engine casing. Remove it and use a funnel or a measured oil bottle to pour in 500ml (0.53 quart) of 15W-50 gear oil.
    • Replace the filler cap and clean up any spilled oil.
  8. Final Checks
    • Start the engine and let it run for one minute.
    • Shut it off and check for leaks at the drain plug.
    • Let the oil settle for a few minutes and check the sight glass, dipstick, or inspection screw (if equipped) for the oil level. Add more oil in small amounts if required, but do not overfill.

Special 2024 GAS GAS MC 65 Call-Outs

  • Oil plug access: Unique to this model/year, a shallow 13mm socket allows you to access the drain plug without removing the shifter — a big time-saver and helps prevent unnecessary wear on hardware.
  • Volume accuracy: Carefully measure 500ml (0.53qt) of oil. Over or under-filling can harm clutch performance and reduce engine life.
  • O-ring maintenance: Periodically replacing the drain plug O-ring is highly recommended as an inexpensive way to prevent leaks common to high-vibe 65cc engines.
  • Clean environment: Even minor dirt contamination can severely impact the MC 65’s sensitive clutch and gearbox. Take extra care to keep all parts clean during the oil change process.

Disposal and Environmental Reminder

  • Do not pour used oil on the ground or down drains. Collect it and recycle through an official recycling center, service shop, or hazardous waste location.

For OEM or performance parts, high-quality lubricants, and all your oil change needs, visit MotoSport.com—your trusted source for everything dirt bike.

Related Shopping Categories

Shop Motor Oil for a 2024 GAS GAS MC 65 Dirt Bike.

Shop Oil Filters for a 2024 GAS GAS MC 65 Dirt Bike.

Shop Oil Drain Pans for a 2024 GAS GAS MC 65 Dirt Bike.

Shop Tools for a 2024 GAS GAS MC 65 Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2024 GAS GAS MC 65 Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.